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Java > Open Source Codes > org > apache > avalon > extension > manager > UnsatisfiedExtensionException


1 /*
2  * Copyright 2004 Apache Software Foundation
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
12  * implied.
13  *
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18 package org.apache.avalon.extension.manager;
19
20 import org.apache.avalon.extension.Extension;
21
22 /**
23  * Exception indicating an extension was not found in Package Repository.
24  *
25  * @author <a HREF="mailto:dev@avalon.apache.org">Avalon Development Team</a>
26  * @version $Revision: 1.2 $ $Date: 2004/02/24 22:39:31 $
27  * @see Extension
28  */
29 public class UnsatisfiedExtensionException
30     extends Exception JavaDoc
31 {
32     /**
33      * The unsatisfied Extension.
34      */
35     private final Extension m_extension;
36
37     /**
38      * Construct the <code>UnsatisfiedPackageException</code>
39      * for specified {@link Extension}.
40      *
41      * @param extension the extension that caused exception
42      */
43     public UnsatisfiedExtensionException( final Extension extension )
44     {
45         if( null == extension )
46         {
47             throw new NullPointerException JavaDoc( "extension" );
48         }
49
50         m_extension = extension;
51     }
52
53     /**
54      * Return the unsatisfied {@link Extension} that
55      * caused this exception tho be thrown.
56      *
57      * @return the unsatisfied Extension
58      */
59     public Extension getUnsatisfiedExtension()
60     {
61         return m_extension;
62     }
63 }
64
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